Creatures are permanents, meaning they stay on the battlefield until they are destroyed or otherwise removed from the game
Necroduality gives you a token copy of every Zombie creature you cast
The creature hits the board, the trigger fires, and you draw cards
Graveblade Marauder feels right at home in a 40+ creature deck and I think hell show his true potential here more than in the New Capenna precon it got reprinted in
(Thats approximately $2.50 and $7.50, respectively, since 1,600 gems cost $9.99.) Once you acquire a sleeve, either through a purchase or by playing, youll be able to use it with as many decks as youd like
This is just a nice tool to play a value game with token makers and creatures that generate value with other enters-the-battlefield abilities that is balanced in a way that makes it far more likely to run out of gas than Recurring Nightmare